quasar | 03543b1c5bfd9393444c098e18ab1ab2fdd450d8544f8fd4019f2ddb4b764edd

Analysis

max time kernel
296s
max time network
300s
platform
windows10-1703_x64
resource
win10-20220901-en
resource tags

arch:x64arch:x86image:win10-20220901-enlocale:en-usos:windows10-1703-x64system
submitted
08-10-2022 22:16

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General

Target

03543b1c5bfd9393444c098e18ab1ab2fdd450d8544f8fd4019f2ddb4b764edd.exe
Size

1.7MB
MD5

3a9f26f591eea148881df705db331380
SHA1

28cf6555dc5df449b8d22fb01180552a1bdc74f9
SHA256

03543b1c5bfd9393444c098e18ab1ab2fdd450d8544f8fd4019f2ddb4b764edd
SHA512

d3e62d0a83ea378a16f805338e11a79c9d4d9bf25442462a34fb08488ec59ebb119b1618c42837d5db2c7431c48500db309527d8a941378608e341db432873ed
SSDEEP

24576:PUxJIRCRoenYQb6VOJ8Kgn1beVuumyEU:

Score

10^/10

quasar cio persistence spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.0

Botnet

Cio

162.19.131.197:4782

Mutex

c5fdf017-8f44-47ea-a69e-0b82e4044ca7

Attributes

encryption_key
59A92039F951E5069C9F50FD9F340E759713B058
install_name
Client.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Quasar Client Startup
subdirectory
SubDir

Signatures

Quasar RAT
Quasar is an open source Remote Access Tool.
trojan spyware quasar

Quasar payload 2 IoCs

resource	yara_rule
behavioral2/memory/4256-277-0x000000000047E79E-mapping.dmp	family_quasar
behavioral2/memory/4256-312-0x0000000000400000-0x0000000000484000-memory.dmp	family_quasar

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2368682536-4045190062-1465778271-1000\Software\Microsoft\Windows\CurrentVersion\Run\Jlnprgcxco = "\"C:\\Users\\Admin\\AppData\\Roaming\\Eqbuy\\Jlnprgcxco.exe\""	03543b1c5bfd9393444c098e18ab1ab2fdd450d8544f8fd4019f2ddb4b764edd.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2916 set thread context of 4256	2916	03543b1c5bfd9393444c098e18ab1ab2fdd450d8544f8fd4019f2ddb4b764edd.exe	68

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2916	03543b1c5bfd9393444c098e18ab1ab2fdd450d8544f8fd4019f2ddb4b764edd.exe
3648	powershell.exe
3648	powershell.exe
3648	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2916	03543b1c5bfd9393444c098e18ab1ab2fdd450d8544f8fd4019f2ddb4b764edd.exe
Token: SeDebugPrivilege	3648	powershell.exe
Token: SeDebugPrivilege	4256	03543b1c5bfd9393444c098e18ab1ab2fdd450d8544f8fd4019f2ddb4b764edd.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4256	03543b1c5bfd9393444c098e18ab1ab2fdd450d8544f8fd4019f2ddb4b764edd.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 2916 wrote to memory of 3648	2916	03543b1c5bfd9393444c098e18ab1ab2fdd450d8544f8fd4019f2ddb4b764edd.exe	66
PID 2916 wrote to memory of 3648	2916	03543b1c5bfd9393444c098e18ab1ab2fdd450d8544f8fd4019f2ddb4b764edd.exe	66
PID 2916 wrote to memory of 3648	2916	03543b1c5bfd9393444c098e18ab1ab2fdd450d8544f8fd4019f2ddb4b764edd.exe	66
PID 2916 wrote to memory of 4256	2916	03543b1c5bfd9393444c098e18ab1ab2fdd450d8544f8fd4019f2ddb4b764edd.exe	68
PID 2916 wrote to memory of 4256	2916	03543b1c5bfd9393444c098e18ab1ab2fdd450d8544f8fd4019f2ddb4b764edd.exe	68
PID 2916 wrote to memory of 4256	2916	03543b1c5bfd9393444c098e18ab1ab2fdd450d8544f8fd4019f2ddb4b764edd.exe	68
PID 2916 wrote to memory of 4256	2916	03543b1c5bfd9393444c098e18ab1ab2fdd450d8544f8fd4019f2ddb4b764edd.exe	68
PID 2916 wrote to memory of 4256	2916	03543b1c5bfd9393444c098e18ab1ab2fdd450d8544f8fd4019f2ddb4b764edd.exe	68
PID 2916 wrote to memory of 4256	2916	03543b1c5bfd9393444c098e18ab1ab2fdd450d8544f8fd4019f2ddb4b764edd.exe	68
PID 2916 wrote to memory of 4256	2916	03543b1c5bfd9393444c098e18ab1ab2fdd450d8544f8fd4019f2ddb4b764edd.exe	68
PID 2916 wrote to memory of 4256	2916	03543b1c5bfd9393444c098e18ab1ab2fdd450d8544f8fd4019f2ddb4b764edd.exe	68

C:\Users\Admin\AppData\Local\Temp\03543b1c5bfd9393444c098e18ab1ab2fdd450d8544f8fd4019f2ddb4b764edd.exe
"C:\Users\Admin\AppData\Local\Temp\03543b1c5bfd9393444c098e18ab1ab2fdd450d8544f8fd4019f2ddb4b764edd.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2916
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAAMQA1AA==
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3648
- C:\Users\Admin\AppData\Local\Temp\03543b1c5bfd9393444c098e18ab1ab2fdd450d8544f8fd4019f2ddb4b764edd.exe
  C:\Users\Admin\AppData\Local\Temp\03543b1c5bfd9393444c098e18ab1ab2fdd450d8544f8fd4019f2ddb4b764edd.exe
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:4256

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\03543b1c5bfd9393444c098e18ab1ab2fdd450d8544f8fd4019f2ddb4b764edd.exe.log

Filesize
1KB

MD5
5c01a57bb6376dc958d99ed7a67870ff

SHA1
d092c7dfd148ac12b086049d215e6b00bd78628d

SHA256
cb8fd245425e915bfc5ff411f26303f7cb4a30ed37f2ea4a2f0a12501aa5f2a4

SHA512
e4e3a4b74f8e209573cce58b572c1f71653e6f4df98f98c5a1cecdf76c9ffb91d5e6994c89df41c9f3613a0584301a56ca922ab7497a434e108b28dcd7d33038

Download Submit
memory/2916-120-0x0000000077570000-0x00000000776FE000-memory.dmp

Filesize
1.6MB

Download
memory/2916-121-0x0000000077570000-0x00000000776FE000-memory.dmp

Filesize
1.6MB

Download
memory/2916-122-0x0000000077570000-0x00000000776FE000-memory.dmp

Filesize
1.6MB

Download
memory/2916-123-0x0000000077570000-0x00000000776FE000-memory.dmp

Filesize
1.6MB

Download
memory/2916-124-0x0000000077570000-0x00000000776FE000-memory.dmp

Filesize
1.6MB

Download
memory/2916-125-0x0000000077570000-0x00000000776FE000-memory.dmp

Filesize
1.6MB

Download
memory/2916-126-0x0000000077570000-0x00000000776FE000-memory.dmp

Filesize
1.6MB

Download
memory/2916-127-0x0000000077570000-0x00000000776FE000-memory.dmp

Filesize
1.6MB

Download
memory/2916-128-0x0000000077570000-0x00000000776FE000-memory.dmp

Filesize
1.6MB

Download
memory/2916-129-0x0000000077570000-0x00000000776FE000-memory.dmp

Filesize
1.6MB

Download
memory/2916-131-0x0000000077570000-0x00000000776FE000-memory.dmp

Filesize
1.6MB

Download
memory/2916-132-0x0000000077570000-0x00000000776FE000-memory.dmp

Filesize
1.6MB

Download
memory/2916-133-0x0000000077570000-0x00000000776FE000-memory.dmp

Filesize
1.6MB

Download
memory/2916-130-0x0000000077570000-0x00000000776FE000-memory.dmp

Filesize
1.6MB

Download
memory/2916-134-0x0000000077570000-0x00000000776FE000-memory.dmp

Filesize
1.6MB

Download
memory/2916-135-0x0000000077570000-0x00000000776FE000-memory.dmp

Filesize
1.6MB

Download
memory/2916-136-0x0000000077570000-0x00000000776FE000-memory.dmp

Filesize
1.6MB

Download
memory/2916-137-0x0000000077570000-0x00000000776FE000-memory.dmp

Filesize
1.6MB

Download
memory/2916-139-0x0000000077570000-0x00000000776FE000-memory.dmp

Filesize
1.6MB

Download
memory/2916-138-0x0000000077570000-0x00000000776FE000-memory.dmp

Filesize
1.6MB

Download
memory/2916-140-0x0000000077570000-0x00000000776FE000-memory.dmp

Filesize
1.6MB

Download
memory/2916-141-0x0000000077570000-0x00000000776FE000-memory.dmp

Filesize
1.6MB

Download
memory/2916-142-0x0000000077570000-0x00000000776FE000-memory.dmp

Filesize
1.6MB

Download
memory/2916-143-0x0000000077570000-0x00000000776FE000-memory.dmp

Filesize
1.6MB

Download
memory/2916-144-0x0000000077570000-0x00000000776FE000-memory.dmp

Filesize
1.6MB

Download
memory/2916-145-0x0000000077570000-0x00000000776FE000-memory.dmp

Filesize
1.6MB

Download
memory/2916-146-0x0000000077570000-0x00000000776FE000-memory.dmp

Filesize
1.6MB

Download
memory/2916-147-0x0000000077570000-0x00000000776FE000-memory.dmp

Filesize
1.6MB

Download
memory/2916-148-0x0000000077570000-0x00000000776FE000-memory.dmp

Filesize
1.6MB

Download
memory/2916-149-0x0000000077570000-0x00000000776FE000-memory.dmp

Filesize
1.6MB

Download
memory/2916-150-0x0000000077570000-0x00000000776FE000-memory.dmp

Filesize
1.6MB

Download
memory/2916-151-0x0000000077570000-0x00000000776FE000-memory.dmp

Filesize
1.6MB

Download
memory/2916-152-0x0000000000A40000-0x0000000000C00000-memory.dmp

Filesize
1.8MB

Download
memory/2916-153-0x0000000077570000-0x00000000776FE000-memory.dmp

Filesize
1.6MB

Download
memory/2916-154-0x0000000077570000-0x00000000776FE000-memory.dmp

Filesize
1.6MB

Download
memory/2916-155-0x0000000077570000-0x00000000776FE000-memory.dmp

Filesize
1.6MB

Download
memory/2916-156-0x0000000077570000-0x00000000776FE000-memory.dmp

Filesize
1.6MB

Download
memory/2916-157-0x0000000077570000-0x00000000776FE000-memory.dmp

Filesize
1.6MB

Download
memory/2916-158-0x0000000077570000-0x00000000776FE000-memory.dmp

Filesize
1.6MB

Download
memory/2916-159-0x0000000077570000-0x00000000776FE000-memory.dmp

Filesize
1.6MB

Download
memory/2916-160-0x0000000005460000-0x0000000005542000-memory.dmp

Filesize
904KB

Download
memory/2916-161-0x0000000077570000-0x00000000776FE000-memory.dmp

Filesize
1.6MB

Download
memory/2916-162-0x0000000077570000-0x00000000776FE000-memory.dmp

Filesize
1.6MB

Download
memory/2916-163-0x0000000005E50000-0x0000000005EE2000-memory.dmp

Filesize
584KB

Download
memory/2916-164-0x0000000077570000-0x00000000776FE000-memory.dmp

Filesize
1.6MB

Download
memory/2916-165-0x0000000077570000-0x00000000776FE000-memory.dmp

Filesize
1.6MB

Download
memory/2916-166-0x0000000077570000-0x00000000776FE000-memory.dmp

Filesize
1.6MB

Download
memory/2916-167-0x0000000077570000-0x00000000776FE000-memory.dmp

Filesize
1.6MB

Download
memory/2916-168-0x0000000005F50000-0x0000000005F72000-memory.dmp

Filesize
136KB

Download
memory/2916-169-0x0000000077570000-0x00000000776FE000-memory.dmp

Filesize
1.6MB

Download
memory/2916-170-0x0000000005F80000-0x00000000062D0000-memory.dmp

Filesize
3.3MB

Download
memory/2916-171-0x0000000077570000-0x00000000776FE000-memory.dmp

Filesize
1.6MB

Download
memory/2916-172-0x0000000077570000-0x00000000776FE000-memory.dmp

Filesize
1.6MB

Download
memory/2916-173-0x0000000077570000-0x00000000776FE000-memory.dmp

Filesize
1.6MB

Download
memory/2916-174-0x0000000077570000-0x00000000776FE000-memory.dmp

Filesize
1.6MB

Download
memory/2916-175-0x0000000077570000-0x00000000776FE000-memory.dmp

Filesize
1.6MB

Download
memory/2916-176-0x0000000077570000-0x00000000776FE000-memory.dmp

Filesize
1.6MB

Download
memory/2916-177-0x0000000077570000-0x00000000776FE000-memory.dmp

Filesize
1.6MB

Download
memory/2916-178-0x0000000077570000-0x00000000776FE000-memory.dmp

Filesize
1.6MB

Download
memory/2916-179-0x0000000077570000-0x00000000776FE000-memory.dmp

Filesize
1.6MB

Download
memory/2916-180-0x0000000077570000-0x00000000776FE000-memory.dmp

Filesize
1.6MB

Download
memory/2916-181-0x0000000077570000-0x00000000776FE000-memory.dmp

Filesize
1.6MB

Download
memory/2916-182-0x0000000077570000-0x00000000776FE000-memory.dmp

Filesize
1.6MB

Download
memory/2916-183-0x0000000077570000-0x00000000776FE000-memory.dmp

Filesize
1.6MB

Download
memory/2916-184-0x0000000077570000-0x00000000776FE000-memory.dmp

Filesize
1.6MB

Download
memory/2916-185-0x0000000077570000-0x00000000776FE000-memory.dmp

Filesize
1.6MB

Download
memory/2916-186-0x0000000077570000-0x00000000776FE000-memory.dmp

Filesize
1.6MB

Download
memory/2916-187-0x0000000077570000-0x00000000776FE000-memory.dmp

Filesize
1.6MB

Download
memory/2916-188-0x0000000077570000-0x00000000776FE000-memory.dmp

Filesize
1.6MB

Download
memory/3648-189-0x0000000000000000-mapping.dmp

Download
memory/3648-225-0x00000000067D0000-0x0000000006806000-memory.dmp

Filesize
216KB

Download
memory/3648-230-0x0000000006F50000-0x0000000007578000-memory.dmp

Filesize
6.2MB

Download
memory/3648-249-0x00000000075F0000-0x0000000007656000-memory.dmp

Filesize
408KB

Download
memory/3648-250-0x0000000007660000-0x00000000076C6000-memory.dmp

Filesize
408KB

Download
memory/3648-253-0x0000000007800000-0x000000000781C000-memory.dmp

Filesize
112KB

Download
memory/3648-254-0x00000000081C0000-0x000000000820B000-memory.dmp

Filesize
300KB

Download
memory/3648-258-0x0000000007F00000-0x0000000007F76000-memory.dmp

Filesize
472KB

Download
memory/3648-269-0x0000000009690000-0x0000000009D08000-memory.dmp

Filesize
6.5MB

Download
memory/3648-270-0x0000000008DC0000-0x0000000008DDA000-memory.dmp

Filesize
104KB

Download
memory/4256-277-0x000000000047E79E-mapping.dmp

Download
memory/4256-312-0x0000000000400000-0x0000000000484000-memory.dmp

Filesize
528KB

Download
memory/4256-316-0x00000000056D0000-0x0000000005BCE000-memory.dmp

Filesize
5.0MB

Download
memory/4256-317-0x0000000005270000-0x0000000005302000-memory.dmp

Filesize
584KB

Download
memory/4256-334-0x00000000051E0000-0x00000000051EA000-memory.dmp

Filesize
40KB

Download
memory/4256-338-0x00000000061E0000-0x00000000067E6000-memory.dmp

Filesize
6.0MB

Download
memory/4256-340-0x0000000005C20000-0x0000000005C70000-memory.dmp

Filesize
320KB

Download
memory/4256-341-0x0000000005E40000-0x0000000005EF2000-memory.dmp

Filesize
712KB

Download